Packing-king



1.1. RICHTER. l PACKING ams. AP PL|cATloN'F|LD FEB. I2. 1916. www M112. mja. 1,316,464.

YPatented Sept, 16,1919.

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UNITED .STATES PATENT. oFFIo-E.'

JoIIN .'r. RICHTER., or 'mirarl RIVER FALLS, MINNESOTA.

. PACKING-RING.

Specification of Letters Patent.

j 'Patented sept. 16,1919( Applieetien inea February 12,1916, serial Ne. 77,954'. Renewed neeember 2, 191s.. sei-f9.1.- ne. 265,052. i

To all whom it may concern:

Be it known that I, JOHN J. RICHTER, a citizen of the United States, residing at Thief River Falls, in the county of Pennington and StateA of innesota, haveinvented a newr and useful Improvement in Packing-Rings, of ,which the following is a specification.

The object of this invention is to provide improvements in packing rings for use on pistons of engines', pumps and similar machines, and particularly for pistons of internal combustion engines, wherein the ring will remain tight at all times automatically under Working conditions to which rings of this character are usually subject.

' .the rings wearing away on of the device, detached,

In the accompanyingfdrawing forming part of this specification, Figure 1 is a view illustrating in appearance assumed interlocking position;l

and dotted line'sthe when the endsare/in Fig. 2 is a planof a tail View, brokenl away,`of the interlocking end portions of the ring, the. ends being slightly separated; and Fig. 4 .is a similar view of a single end portion of the rmg.

With piston rings now in general use,

lessileakage 'due to their outer faces, and the ends separating, thus permitting the fluid under compression to leak through.

My invention overcomes this objection by there is always more or constructing the overlapping ends of the groove being fr l'med by ring, so that as the ring wears away in use and opens out the ends will still be held firmly in contact with each other, and thus prevent leakage.

In the drawing A is the usual body portion of a ring having ends 2 and 3 which are adjacent. Each of these ends is formed side tongue 4e and a laterally shoulder 5 forming a side groove, vsai tongue being out away longitudinally on its under or inner edge and said shoulder and i a portion of the end of the ring being cut away along the side of the tongue. The adjacent ends of the ring are 'similarly constructed, eachhavring a side' tongue and an adjacent side lgroove, the" tongue`in` one member entering the, groove in the oppositev member. The grooves/and tonguesin the opposite meinto produce side with a ,forwardly projecting overlapping projecting f ring detail; Fig. 3 1s a de` .vention can tion of'the ring such'as 7 is welded to the remainmgportion to 'enable Inillingnthe ends with the overlapping' joint as described.4 65 -i By welding` the ring, the ends can be made to overlap any distance desired.. by milling the ends, the 'surfaces can be iinished to produce an absolutely leak proof joint. Preferably the ring in normal posi# tion .has sufficient opening between its ends, so that ysufficient expansion -of theY ring is provided to produce aA tight lit in the cylinder with which the ring is employed. l The being made of resilient material permits the face of the ring wearing away to a considerable extent. As the surface of the l ring wears away and expands, the overlapping surfaces 6 on its ends produce a leak proofljoint.- 8u In accordance with the patent statutes, I have described thel principles of operation of my invention, together with the appa' ratus whiclfi I now consider -to represent the best embodiment thereof, but I desire to have it understood that the construction shown is onl illustrative, and that the in-..

e carried out by other. means-.5` to uses other than those above` A and applied set forth within 'the scope of theIQIlOvVQ-SVBT ing claims.

Havingl described my inveneieemhai I l' claim as new and desire to ters Patent is: I j

1. A packing ring comprising fa split ring, the two ends being cut away symmetrically to interlock with each other, each end comprising a tongue curved on the in-l ner edge of its eXtreme end to engagea correspondinglyy formed groove in the opposite end'of the ring, said engaging tongues and grooves being arranged in two adjacent, steps to form interlocking shoulders therebetween, said shouldersbeing broader at" the' ends of the tongues and. groovesthan at. fue their mid-points.' f

2. A` packing ring ica interlocking overlapping surfaces, the transverse dimensions of each of said surfaces being less intermediate its length than at its ends.

3. A packing ring comprising a split ring. the two ends being out away symmetrically to forni interlocking surfaces, each of said .surfaces being' curved on their inner edges in reverse curves and the transverse dimensions of each of said surfaces being 10 less intermediate its lenfftli than at its ends. In testimony Whereo, I have signed my name to this speeiication.1

JOHN J. RICHTER. 

